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Infectious bovine keratoconjunctivitis
Infectious bovine keratoconjunctivitis, or IBK, is a veterinary infection of cattle caused by ''Moraxella bovis'', a Gram-negative, β-haemolytic, aerobic, rod-shaped bacterium. It is spread by direct contact or by flies serving as vectors. It is the most common ocular disease of cattle (mostly beef). IBK is similar to human pink eye and causes severe infection of the conjunctiva, edema, corneal opacity, and ulceration. This disease is highly contagious and occurs worldwide. Younger animals are more susceptible, but recovery with minimal damage is usual, if they are treated early. The disease is also known as pinkeye, New Forest eye or blight.〔Farming Small Areas, August/September, 2008, "Clearing up pinkeye"〕
==Cause==
''Moraxella bovis'' is a Gram-negative rod-shaped aerobe. This bacterium is an obligate intracellular parasite of the mucous membranes, and can usually be isolated from the respiratory tract, vagina, and conjunctiva of healthy animals. Transmission of IBK is through direct contact with mucous membranes and their secretions and indirect contact where flies act as a mechanical vector. Asymptomatic carrier animals can also be source of infection.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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